Do women pregnant with multiples run a higher risk of preterm labor?
Yes, they do tend to experience it more often than women pregnant with singletons, who have an overall preterm labor rate of 10 percent. The table (below) lists the probabilities. Risk of Preterm Labor in Multiple Pregnancies Pregnancy Risk of Preterm Labor Twin50% Triplet90% Quad100% Source: Luke, Barbara and Eberlein, Tamara, When You’re Expecting Twins, Triplets or Quads, New York: HarperPerennial, 1999.